Yulong Li, Bin Tang, Yue Li, Haoyue Wu, Yunlong Pan, Xuewen Li, Hua Ouyang, Wenqin Wang, Min Lei
{"title":"用电子束包覆制备的高熵合金涂层提高 Ti-6Al-4V 的表面性能","authors":"Yulong Li, Bin Tang, Yue Li, Haoyue Wu, Yunlong Pan, Xuewen Li, Hua Ouyang, Wenqin Wang, Min Lei","doi":"10.1007/s00339-024-08044-y","DOIUrl":null,"url":null,"abstract":"<div><p>A high entropy alloy (HEA) coating was applied on Ti-6Al-4 V by electron beam cladding Al<sub>7</sub>(CoFeNi)<sub>86</sub>Ti<sub>7</sub> HEA powder. The optimal electron beam cladding parameters, determined through orthogonal experimental analysis, were: 64 kV accelerating voltage, 12 mA welding beam current, and 3 s scanning time. Microstructure, phase composition, nano-hardness and wear resistance of the coating prepared using optimal parameters were investigated. The primary phases in the top, middle, and bottom regions of the coating were identified as body-centered cubic (BCC) solid solution with Ti-rich compounds (NiTi, Ti<sub>2</sub>Ni, and Ti<sub>2</sub>Co), BCC + Ti<sub>0.85</sub>Al<sub>0.15</sub>, and Ti<sub>0.85</sub>Al<sub>0.15</sub>, respectively. The coating had an average grain size of 3.9 μm, and the dislocation density of the BCC phase was 1.51 × 10<sup>14</sup>/m². Due to the presence of compounds, fine grains, and high dislocation density, the coating achieved an average nano-hardness of 8.39 ± 0.29 GPa, approximately 1.8 times higher than that of Ti-6Al-4 V. Additionally, the wear rate of the cladded coating was 22.28 ± 4.56 × 10<sup>− 6</sup> mm<sup>3</sup>/(N·m), representing a 65.5% reduction compared to Ti-6Al-4 V.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"130 12","pages":""},"PeriodicalIF":2.5000,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhancing the surface properties of Ti-6Al-4V with high entropy alloy coating prepared by electron beam cladding\",\"authors\":\"Yulong Li, Bin Tang, Yue Li, Haoyue Wu, Yunlong Pan, Xuewen Li, Hua Ouyang, Wenqin Wang, Min Lei\",\"doi\":\"10.1007/s00339-024-08044-y\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A high entropy alloy (HEA) coating was applied on Ti-6Al-4 V by electron beam cladding Al<sub>7</sub>(CoFeNi)<sub>86</sub>Ti<sub>7</sub> HEA powder. The optimal electron beam cladding parameters, determined through orthogonal experimental analysis, were: 64 kV accelerating voltage, 12 mA welding beam current, and 3 s scanning time. Microstructure, phase composition, nano-hardness and wear resistance of the coating prepared using optimal parameters were investigated. The primary phases in the top, middle, and bottom regions of the coating were identified as body-centered cubic (BCC) solid solution with Ti-rich compounds (NiTi, Ti<sub>2</sub>Ni, and Ti<sub>2</sub>Co), BCC + Ti<sub>0.85</sub>Al<sub>0.15</sub>, and Ti<sub>0.85</sub>Al<sub>0.15</sub>, respectively. The coating had an average grain size of 3.9 μm, and the dislocation density of the BCC phase was 1.51 × 10<sup>14</sup>/m². Due to the presence of compounds, fine grains, and high dislocation density, the coating achieved an average nano-hardness of 8.39 ± 0.29 GPa, approximately 1.8 times higher than that of Ti-6Al-4 V. Additionally, the wear rate of the cladded coating was 22.28 ± 4.56 × 10<sup>− 6</sup> mm<sup>3</sup>/(N·m), representing a 65.5% reduction compared to Ti-6Al-4 V.</p></div>\",\"PeriodicalId\":473,\"journal\":{\"name\":\"Applied Physics A\",\"volume\":\"130 12\",\"pages\":\"\"},\"PeriodicalIF\":2.5000,\"publicationDate\":\"2024-11-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Physics A\",\"FirstCategoryId\":\"4\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s00339-024-08044-y\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Physics A","FirstCategoryId":"4","ListUrlMain":"https://link.springer.com/article/10.1007/s00339-024-08044-y","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Enhancing the surface properties of Ti-6Al-4V with high entropy alloy coating prepared by electron beam cladding
A high entropy alloy (HEA) coating was applied on Ti-6Al-4 V by electron beam cladding Al7(CoFeNi)86Ti7 HEA powder. The optimal electron beam cladding parameters, determined through orthogonal experimental analysis, were: 64 kV accelerating voltage, 12 mA welding beam current, and 3 s scanning time. Microstructure, phase composition, nano-hardness and wear resistance of the coating prepared using optimal parameters were investigated. The primary phases in the top, middle, and bottom regions of the coating were identified as body-centered cubic (BCC) solid solution with Ti-rich compounds (NiTi, Ti2Ni, and Ti2Co), BCC + Ti0.85Al0.15, and Ti0.85Al0.15, respectively. The coating had an average grain size of 3.9 μm, and the dislocation density of the BCC phase was 1.51 × 1014/m². Due to the presence of compounds, fine grains, and high dislocation density, the coating achieved an average nano-hardness of 8.39 ± 0.29 GPa, approximately 1.8 times higher than that of Ti-6Al-4 V. Additionally, the wear rate of the cladded coating was 22.28 ± 4.56 × 10− 6 mm3/(N·m), representing a 65.5% reduction compared to Ti-6Al-4 V.
期刊介绍：
Applied Physics A publishes experimental and theoretical investigations in applied physics as regular articles, rapid communications, and invited papers. The distinguished 30-member Board of Editors reflects the interdisciplinary approach of the journal and ensures the highest quality of peer review.
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